A Study on Rotor Design of Consequent-Pole Permanent Magnet Machines
- Resource Type
- Conference
- Authors
- Sakamoto, Shingo; Yokoi, Yuichi; Higuchi, Tsuyoshi; Miyamoto, Yasuhiro
- Source
- 2020 23rd International Conference on Electrical Machines and Systems (ICEMS) Electrical Machines and Systems (ICEMS), 2020 23rd International Conference on. :1600-1603 Nov, 2020
- Subject
- Power, Energy and Industry Applications
Robotics and Control Systems
Transportation
Rotors
Air gaps
Torque
Magnetic circuits
Stators
Manufacturing
Current distribution
Consequent-pole configuration
permanent magnet machine
rotor design
volume of permanent magnets
- Language
- ISSN
- 2642-5513
Permanent magnet (PM) machines generally employ rare-earth PMs. The rare-earth PMs increase the manufacturing cost of PM machines due to their high material cost. To reduce the manufacturing cost of PM machines, this paper studies a consequent-pole configuration. Consequent-pole PM machines have poles with magnets and poles composed of iron-cores. The rotor design can adjust the air-gap flux density distribution. This improves the average torque and reduces the volume of PMs simultaneously. In this paper, the rotor of a consequent-pole surface-mounted PM machine is designed to reduce the volume of PMs. The characteristics are investigated for the rotor structure through a theoretical calculation and a finite-element method analysis. These results show that the consequent-pole configuration can reduce the volume of PMs in comparison with a conventional one.